/* Top level of GCC compilers (cc1, cc1plus, etc.)
Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Free Software Foundation, Inc.
This file is part of GCC.
#include "diagnostic.h"
#include "params.h"
#include "reload.h"
+#include "ira.h"
#include "dwarf2asm.h"
#include "integrate.h"
#include "real.h"
#include "alloc-pool.h"
#include "tree-mudflap.h"
#include "tree-pass.h"
+#include "gimple.h"
+#include "tree-ssa-alias.h"
+#include "plugin.h"
#if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
#include "dwarf2out.h"
const char *main_input_filename;
-#ifndef USE_MAPPED_LOCATION
-location_t unknown_location = { NULL, 0 };
-#endif
-
/* Used to enable -fvar-tracking, -fweb and -frename-registers according
to optimize and default_debug_hooks in process_options (). */
#define AUTODETECT_VALUE 2
struct line_maps *line_table;
-/* Stack of currently pending input files. */
-
-struct file_stack *input_file_stack;
-
-/* Incremented on each change to input_file_stack. */
-int input_file_stack_tick;
-
-/* Record of input_file_stack at each tick. */
-typedef struct file_stack *fs_p;
-DEF_VEC_P(fs_p);
-DEF_VEC_ALLOC_P(fs_p,heap);
-static VEC(fs_p,heap) *input_file_stack_history;
-
-/* Whether input_file_stack has been restored to a previous state (in
- which case there should be no more pushing). */
-static bool input_file_stack_restored;
-
/* Name to use as base of names for dump output files. */
const char *dump_base_name;
const char *aux_base_name;
+/* Prefix for profile data files */
+const char *profile_data_prefix;
+
/* A mask of target_flags that includes bit X if X was set or cleared
on the command line. */
if none. */
const char * current_function_func_begin_label;
-/* Temporarily suppress certain warnings.
- This is set while reading code from a system header file. */
-
-int in_system_header = 0;
-
/* Nonzero means to collect statistics which might be expensive
and to print them when we are done. */
int flag_detailed_statistics = 0;
int flag_complex_method = 1;
-/* Nonzero means that we don't want inlining by virtue of -fno-inline,
- not just because the tree inliner turned us off. */
-
-int flag_really_no_inline = 2;
-
/* Nonzero means we should be saving declaration info into a .X file. */
int flag_gen_aux_info = 0;
enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC;
+/* Set the default region and algorithm for the integrated register
+ allocator. */
+
+enum ira_algorithm flag_ira_algorithm = IRA_ALGORITHM_CB;
+enum ira_region flag_ira_region = IRA_REGION_MIXED;
+
+/* Set the default value for -fira-verbose. */
+
+unsigned int flag_ira_verbose = 5;
+
+/* Set the default for excess precision. */
+
+enum excess_precision flag_excess_precision_cmdline = EXCESS_PRECISION_DEFAULT;
+enum excess_precision flag_excess_precision = EXCESS_PRECISION_DEFAULT;
+
/* Nonzero means change certain warnings into errors.
Usually these are warnings about failure to conform to some standard. */
int flag_pedantic_errors = 0;
+/* Nonzero means make permerror produce warnings instead of errors. */
+
+int flag_permissive = 0;
+
/* -dA causes debug commentary information to be produced in
the generated assembly code (to make it more readable). This option
is generally only of use to those who actually need to read the
to optimize, debug_info_level and debug_hooks in process_options (). */
int flag_var_tracking = AUTODETECT_VALUE;
+/* Type of stack check. */
+enum stack_check_type flag_stack_check = NO_STACK_CHECK;
+
/* True if the user has tagged the function with the 'section'
attribute. */
|| TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
{
if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
- pedwarn ("%q+F used but never defined", decl);
+ pedwarn (input_location, 0, "%q+F used but never defined", decl);
else
warning (OPT_Wunused_function, "%q+F declared %<static%> but never defined", decl);
/* This symbol is effectively an "extern" declaration now. */
}
}
-/* Save the current INPUT_LOCATION on the top entry in the
- INPUT_FILE_STACK. Push a new entry for FILE and LINE, and set the
- INPUT_LOCATION accordingly. */
-
-void
-#ifdef USE_MAPPED_LOCATION
-push_srcloc (location_t fline)
-#else
-push_srcloc (const char *file, int line)
-#endif
-{
- struct file_stack *fs;
-
- gcc_assert (!input_file_stack_restored);
- if (input_file_stack_tick == (int) ((1U << INPUT_FILE_STACK_BITS) - 1))
- sorry ("GCC supports only %d input file changes", input_file_stack_tick);
-
- fs = XNEW (struct file_stack);
- fs->location = input_location;
- fs->next = input_file_stack;
-#ifdef USE_MAPPED_LOCATION
- input_location = fline;
-#else
- input_filename = file;
- input_line = line;
-#endif
- input_file_stack = fs;
- input_file_stack_tick++;
- VEC_safe_push (fs_p, heap, input_file_stack_history, input_file_stack);
-}
-
-/* Pop the top entry off the stack of presently open source files.
- Restore the INPUT_LOCATION from the new topmost entry on the
- stack. */
-
-void
-pop_srcloc (void)
-{
- struct file_stack *fs;
-
- gcc_assert (!input_file_stack_restored);
- if (input_file_stack_tick == (int) ((1U << INPUT_FILE_STACK_BITS) - 1))
- sorry ("GCC supports only %d input file changes", input_file_stack_tick);
-
- fs = input_file_stack;
- input_location = fs->location;
- input_file_stack = fs->next;
- input_file_stack_tick++;
- VEC_safe_push (fs_p, heap, input_file_stack_history, input_file_stack);
-}
-
-/* Restore the input file stack to its state as of TICK, for the sake
- of diagnostics after processing the whole input. Once this has
- been called, push_srcloc and pop_srcloc may no longer be
- called. */
-void
-restore_input_file_stack (int tick)
-{
- if (tick == 0)
- input_file_stack = NULL;
- else
- input_file_stack = VEC_index (fs_p, input_file_stack_history, tick - 1);
- input_file_stack_tick = tick;
- input_file_stack_restored = true;
-}
-
/* Compile an entire translation unit. Write a file of assembly
output and various debugging dumps. */
{
/* Initialize yet another pass. */
+ ggc_protect_identifiers = true;
+
init_cgraph ();
init_final (main_input_filename);
coverage_init (aux_base_name);
+ statistics_init ();
timevar_push (TV_PARSE);
rest_of_compilation for each function). */
lang_hooks.parse_file (set_yydebug);
- /* In case there were missing block closers,
- get us back to the global binding level. */
- lang_hooks.clear_binding_stack ();
-
/* Compilation is now finished except for writing
what's left of the symbol table output. */
timevar_pop (TV_PARSE);
if (flag_syntax_only)
return;
+ ggc_protect_identifiers = false;
+
lang_hooks.decls.final_write_globals ();
if (errorcount || sorrycount)
break;
case 'D': /* These are handled by the preprocessor. */
case 'I':
+ case 'M':
+ case 'N':
+ case 'U':
break;
case 'H':
setup_core_dumping();
break;
-
case 'a':
+ enable_rtl_dump_file ();
+ break;
+
default:
- if (!enable_rtl_dump_file (c))
warning (0, "unrecognized gcc debugging option: %c", c);
break;
}
static const char fmt2[] =
N_("GMP version %s, MPFR version %s.\n");
static const char fmt3[] =
- N_("warning: %s header version %s differs from library version %s.\n");
+ N_("%s%swarning: %s header version %s differs from library version %s.\n");
static const char fmt4[] =
N_("%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n");
#ifndef __VERSION__
if (strcmp (GCC_GMP_STRINGIFY_VERSION, gmp_version))
fprintf (file,
file == stderr ? _(fmt3) : fmt3,
+ indent, *indent != 0 ? " " : "",
"GMP", GCC_GMP_STRINGIFY_VERSION, gmp_version);
if (strcmp (MPFR_VERSION_STRING, mpfr_get_version ()))
fprintf (file,
file == stderr ? _(fmt3) : fmt3,
+ indent, *indent != 0 ? " " : "",
"MPFR", MPFR_VERSION_STRING, mpfr_get_version ());
fprintf (file,
file == stderr ? _(fmt4) : fmt4,
indent, *indent != 0 ? " " : "",
PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE));
+
+ print_plugins_versions (file, indent);
}
#ifdef ASM_COMMENT_START
NULL);
}
else
- inform ("-frecord-gcc-switches is not supported by the current target");
+ inform (input_location, "-frecord-gcc-switches is not supported by the current target");
}
#ifdef ASM_COMMENT_START
switch (*spec)
{
+ case 'E':
+ t = va_arg (*text->args_ptr, tree);
+ if (TREE_CODE (t) == IDENTIFIER_NODE)
+ {
+ pp_string (pp, IDENTIFIER_POINTER (t));
+ return true;
+ }
+ break;
+
case 'D':
t = va_arg (*text->args_ptr, tree);
if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t))
/* This must be done after add_params but before argument processing. */
init_ggc_heuristics();
init_optimization_passes ();
+ statistics_early_init ();
}
/* Return true if the current target supports -fsection-anchors. */
This can happen with incorrect pre-processed input. */
debug_hooks = &do_nothing_debug_hooks;
+ /* This replaces set_Wunused. */
+ if (warn_unused_function == -1)
+ warn_unused_function = warn_unused;
+ if (warn_unused_label == -1)
+ warn_unused_label = warn_unused;
+ /* Wunused-parameter is enabled if both -Wunused -Wextra are enabled. */
+ if (warn_unused_parameter == -1)
+ warn_unused_parameter = (warn_unused && extra_warnings);
+ if (warn_unused_variable == -1)
+ warn_unused_variable = warn_unused;
+ if (warn_unused_value == -1)
+ warn_unused_value = warn_unused;
+
/* Allow the front end to perform consistency checks and do further
initialization based on the command line options. This hook also
sets the original filename if appropriate (e.g. foo.i -> foo.c)
so we can correctly initialize debug output. */
no_backend = lang_hooks.post_options (&main_input_filename);
-#ifndef USE_MAPPED_LOCATION
- input_filename = main_input_filename;
-#endif
#ifdef OVERRIDE_OPTIONS
/* Some machines may reject certain combinations of options. */
else
aux_base_name = "gccaux";
+#ifndef HAVE_cloog
+ if (flag_graphite
+ || flag_loop_block
+ || flag_loop_interchange
+ || flag_loop_strip_mine
+ || flag_graphite_identity)
+ sorry ("Graphite loop optimizations cannot be used");
+#endif
+
/* Unrolling all loops implies that standard loop unrolling must also
be done. */
if (flag_unroll_all_loops)
if (flag_asynchronous_unwind_tables)
flag_unwind_tables = 1;
- if (!flag_unit_at_a_time)
- flag_section_anchors = 0;
-
if (flag_value_profile_transformations)
flag_profile_values = 1;
flag_prefetch_loop_arrays = 0;
}
-#ifndef OBJECT_FORMAT_ELF
-#ifndef OBJECT_FORMAT_MACHO
- if (flag_function_sections && write_symbols != NO_DEBUG)
- warning (0, "-ffunction-sections may affect debugging on some targets");
-#endif
-#endif
-
/* The presence of IEEE signaling NaNs, implies all math can trap. */
if (flag_signaling_nans)
flag_trapping_math = 1;
+ /* We cannot reassociate if we want traps or signed zeros. */
+ if (flag_associative_math && (flag_trapping_math || flag_signed_zeros))
+ {
+ warning (0, "-fassociative-math disabled; other options take precedence");
+ flag_associative_math = 0;
+ }
+
/* With -fcx-limited-range, we do cheap and quick complex arithmetic. */
if (flag_cx_limited_range)
flag_complex_method = 0;
+ /* With -fcx-fortran-rules, we do something in-between cheap and C99. */
+ if (flag_cx_fortran_rules)
+ flag_complex_method = 1;
+
/* Targets must be able to place spill slots at lower addresses. If the
target already uses a soft frame pointer, the transition is trivial. */
if (!FRAME_GROWS_DOWNWARD && flag_stack_protect)
if (flag_unwind_tables && !ACCUMULATE_OUTGOING_ARGS
&& flag_omit_frame_pointer)
{
- warning (0, "unwind tables currently requires a frame pointer "
+ warning (0, "unwind tables currently require a frame pointer "
"for correctness");
flag_omit_frame_pointer = 0;
}
save_register_info ();
/* Initialize the target-specific back end pieces. */
+ ira_init_once ();
backend_init_target ();
}
+/* Initialize excess precision settings. */
+static void
+init_excess_precision (void)
+{
+ /* Adjust excess precision handling based on the target options. If
+ the front end cannot handle it, flag_excess_precision_cmdline
+ will already have been set accordingly in the post_options
+ hook. */
+ gcc_assert (flag_excess_precision_cmdline != EXCESS_PRECISION_DEFAULT);
+ flag_excess_precision = flag_excess_precision_cmdline;
+ if (flag_unsafe_math_optimizations)
+ flag_excess_precision = EXCESS_PRECISION_FAST;
+ if (flag_excess_precision == EXCESS_PRECISION_STANDARD)
+ {
+ int flt_eval_method = TARGET_FLT_EVAL_METHOD;
+ switch (flt_eval_method)
+ {
+ case -1:
+ case 0:
+ /* Either the target acts unpredictably (-1) or has all the
+ operations required not to have excess precision (0). */
+ flag_excess_precision = EXCESS_PRECISION_FAST;
+ break;
+ case 1:
+ case 2:
+ /* In these cases, predictable excess precision makes
+ sense. */
+ break;
+ default:
+ /* Any other implementation-defined FLT_EVAL_METHOD values
+ require the compiler to handle the associated excess
+ precision rules in excess_precision_type. */
+ gcc_unreachable ();
+ }
+ }
+}
+
/* Initialize things that are both lang-dependent and target-dependent.
This function can be called more than once if target parameters change. */
static void
lang_dependent_init_target (void)
{
+ /* This determines excess precision settings. */
+ init_excess_precision ();
+
/* This creates various _DECL nodes, so needs to be called after the
front end is initialized. It also depends on the HAVE_xxx macros
generated from the target machine description. */
/* Do the target-specific parts of expr initialization. */
init_expr_target ();
- /* Although the actions of init_set_costs are language-independent,
- it uses optabs, so we cannot call it from backend_init. */
+ /* Although the actions of these functions are language-independent,
+ they use optabs, so we cannot call them from backend_init. */
init_set_costs ();
+ ira_init ();
expand_dummy_function_end ();
}
dump_base_name = name && name[0] ? name : "gccdump";
/* Other front-end initialization. */
-#ifdef USE_MAPPED_LOCATION
input_location = BUILTINS_LOCATION;
-#else
- input_filename = "<built-in>";
- input_line = 0;
-#endif
if (lang_hooks.init () == 0)
return 0;
input_location = save_loc;
ggc_print_statistics ();
stringpool_statistics ();
dump_tree_statistics ();
+ dump_gimple_statistics ();
dump_rtx_statistics ();
dump_varray_statistics ();
dump_alloc_pool_statistics ();
dump_bitmap_statistics ();
+ dump_vec_loc_statistics ();
dump_ggc_loc_statistics (final);
+ dump_alias_stats (stderr);
+ dump_pta_stats (stderr);
}
/* Clean up: close opened files, etc. */
fatal_error ("error closing %s: %m", asm_file_name);
}
+ statistics_fini ();
finish_optimization_passes ();
+ ira_finish_once ();
+
if (mem_report)
dump_memory_report (true);
compile_file ();
finalize ();
+
+ /* Invoke registered plugin callbacks. */
+ invoke_plugin_callbacks (PLUGIN_FINISH_UNIT, NULL);
}
/* Stop timing and print the times. */
It is not safe to call this function more than once. */
int
-toplev_main (unsigned int argc, const char **argv)
+toplev_main (int argc, char **argv)
{
- save_argv = argv;
+ expandargv (&argc, &argv);
+
+ save_argv = (const char **) argv;
/* Initialization of GCC's environment, and diagnostics. */
general_init (argv[0]);
/* Parse the options and do minimal processing; basically just
enough to default flags appropriately. */
- decode_options (argc, argv);
+ decode_options (argc, (const char **) argv);
init_local_tick ();
+ initialize_plugins ();
+
+ if (version_flag)
+ print_version (stderr, "");
+
+ if (help_flag)
+ print_plugins_help (stderr, "");
+
/* Exit early if we can (e.g. -help). */
if (!exit_after_options)
do_compile ();
+ if (warningcount || errorcount)
+ print_ignored_options ();
+
+ /* Invoke registered plugin callbacks if any. */
+ invoke_plugin_callbacks (PLUGIN_FINISH, NULL);
+
+ finalize_plugins ();
if (errorcount || sorrycount)
return (FATAL_EXIT_CODE);
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